Double skip or kibble for automatically receiving loose material.



P. VOLKENBORN. DOUBLE SKIP 0R KIBBLE FOR AUTOMATIOALLY RECEIVING LOOSE MATERIAL.

APPLICATION FILED JULY 24, 1913.

Patented July 14, 191i THE-NORRIS PETERS c0, WAsHlNcroN, n, c.

unrrnn STATES, PATENT OFFICE.

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rateea To all whom it mar/concern Be it known that I, PAUL VOLKENBORN, a subject of the German Emperor, and resid-' ing at Gologne-Ehrenfeld; Germany, have invented a new' and useful Double Skip or Kibbl'e for Automatically ReceivingLLoose Material 5 and Idohereby declare the following to best} full, clear; and exact description-of the same.

The invention described in S'Z patent application, Serial No. 7 63194 relates to the movement of the skips by means of oscillating levers which results in favorable excavating curve and at the same time the path of the pulley bloc'lz isnot increased compared to grabs with closing buckets. The construction described in theabDYQ n med application has however the disadvantage that the central portion of the material scraped together by the kibbles, is left behind when the grab is lifted, owing to the distance between the cutting edges of the skips.

The object of this invention is to take up also this central portion of the material scraped together without departing from the invention described in U. S. patent application Serial No. 7 63194. which consists in leaving such a" distance between the cutting edges of the skips that the material is not crushed. This is effected by giving one bucket an advance relatively to the other in the closing movement, so that in the end position, the cutting edges of the kibbles are not next to each other, as in the above named patent application, but lie under or above each other. It is sufiicient that the cutting edges should be approximately vertically above each other. In order, however, to insure a better closing, a kind of overlap can be used, as shown in the annexed drawing. In this arrangement, the leading blade or bucket shovels the material into the one lagbehind, and the whole material scraped together, is taken up, as nothing can fall down between the two skips in the closing position. Inspite of. that, no jamming or crushing of the particles of the material takes place between the cutting edges of the kibbles.

In the drawings, the figure represents in somewhat diagrammatical form, a double skip or kibble embodying the features of my invention.

At the two lower ends of a grab frame 1, are pivoted as at 3, oscillatory supports or I ste'ifidatitin of Late-a sea. Fat'e itedJuIy 1 4, 1914, Applicationfiled' July 24,

1912. SeriaI'Nb; 780.8170;

bell crankile'versQf The outer ends of skips 5 and 5 are eachrotatably mounted, as at 4, on onearm of the bell cranks 2,'while the other a'rmof each of the bell cranks is piv- 6O .otally connected as at 6 by alink 7 tea bottom oulleyL8i of the hoisting mechanism- ;-which* is ofjthe-ordinary construction and which is vertically movable in the frame 1. .Gonnected'alsotothelower portions of the 5 bottom pulley 8, are links 9 which are pivotally 'c'onne'cted attheir other ends to the inner endsof the skips'5xand' 5, the generalconstruction thus far describedform-f ing no' art ofthe present invention and is 79 specifically disclosed in my application, Se-

, rial No. 763,194.

,In theapplication referred.to-,-the; links 19 gwhichrconnect the inner ends of the skips or kibbles 5 to the movable pulley 8 are pivoted to the skips 5 at equal distances from their cutting edges, which in the closed position of the skip or kibble are separated from each other and lie in substantially the same horizontal plane.

In the present construction, however, each of the links 9 are pivotally mounted at different distances from the cutting edges of the skips and as is shown in the figure, the link 9 whichis connected to the skip 5 is 35 pivoted at a greater distance from the cutting edge thereof than is the link which is connected to the skip 5. This will cause the skip 5 to move in advance of the skip 5, when the skips are being closed, and to assume the position shown in full lines in the figure, that is, with the cutting edge of the skip 5 above and out of contact with the skip 5 and preferably overlapping it a slight degree. It is evident that the movement of one skip in advance of the other may also be controlled by changing the pivotal point of the link 7 with the bell crank 2.

While I have shown the cutting edges of the skips slightly overlapping each other, yet if they were arranged in the same vertical plane, the loose material contained therein will be prevented from falling out of the grab, and in the claims which are annexed hereto, I deem the term in substantially a vertical plane sufficiently broad to cover either of these two constructions.

Having now described my invention, what I claim and desire to secure by Letters Patent is:

1. A double skip or kibble comprising a frame, two skips rotatably mounted thereon, and means for moving said skips to a closed position in which the cutting edges of the skips are arranged out of contact with each other and in substantially vertical alinement.

2. A double skip or kibble comprising a frame, two skips rotatably mounted thereon, and means for moving said skips, one in of the other, to t eir closed position in which the cutting edge of one skip is above and out of contact with the other.

4. A double skip or kibble comprising a frame, oscillatory supports thereon, skips pivotally mounted on said supports, a member movable with respect to'said frame and links connecting said member to each of said I skips and supports respectively, said links 2 being arranged to move one of said skips in advance of the other to their closed position in which the cutting edge ofone skip is above and out of contact with the other.

5.. A double skip or kibble comprising a 3 frame, oscillatory supports thereon, skips pivotally mounted on said supports, a member movable with respect to said frame and links connecting said member to each of said skips and supports'respectively, the links 3 which connect the skips to said member I being arranged to move one of said skips in advance of the other to their closed posi-. tion, in which the cutting edge of one skip is above and out of contact withthe other. 4 In testimony whereof, I have signed my name to this specification in the presence of 1 two subscribing witnesses.

. v PAUL VOLKENBORN.

I Witnesses:

ALBERT PIETRKOWSKI, LOUIS VAnnoRY.

00111:: of this patent may be obtained for five cents each, by addressing the Commissioner or Patents,

. Washington, D. 0." 

